Removal of the Hydraulic Pressure Transducer

TASK 29-32-11-000-004-A
Removal of the Hydraulic Pressure Transducer

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

FIN: 3068GN

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	CAP - BLANKING
No specific	1	CONTAINER 3 L(3/4 USGAL)
No specific	2	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	2	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
TASK 29-00-00-910-002-A	Safety Procedures of the Hydraulic System
TASK 29-10-00-864-004-A	Depressurize the Brake System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
Hydraulic Pressure Transducer

3. Job Set-up
Subtask 29-32-11-010-054-A

A. Open the right main door of the main gear (Ref. AMM TASK 32-12-00-010-001).

Subtask 29-32-11-865-053-A

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/Y BRK/PRESS/IND	61GG	C10
** ON A/C NOT FOR ALL
49VU	ABCU &/Y BRK/PRESS IND	61GG	C10

Subtask 29-32-11-860-054-A

C. Aircraft Maintenance Configuration

WARNING: OBEY THE HYDRAULIC SAFETY PROCEDURES.

(1) Obey the hydraulic safety procedures (Ref. AMM TASK 29-00-00-910-002).
(2) Make sure that the Yellow hydraulic system is depressurized and put it in the maintenance configuration.
(Ref. AMM TASK 29-00-00-864-001).
(3) Depressurize the reservoir of the Yellow hydraulic system (Ref. AMM TASK 29-14-00-614-001).
(4) Depressurize the brake system (Ref. AMM TASK 29-10-00-864-004).
(5) Put a WARNING NOTICE(S) in position to tell persons not to pressurize the Yellow hydraulic system:

in the cockpit on the hydraulic section 40VU of the overhead panel
on the ground service panel of the Yellow hydraulic system.

(6) Disconnect the isolation coupling of the Power Transfer Unit (PTU) (Ref. AMM TASK 29-23-00-860-001).
(7) Put the CONTAINER 3 L(3/4 USGAL) in position below the hydraulic pressure transducer to collect hydraulic fluid.

4. Procedure
Subtask 29-32-11-020-056-B

A. Removal of the Hydraulic Pressure Transducerr
(1) Disconnect the electrical connector (1).
(2) Put the CAP - BLANKING on the disconnected electrical connector (1).
(3) Remove the nut (7), the washer (8), the screw (10), the bonding jumper (9) and the clamp (11) from the hydraulic pressure transducer (2).

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(4) Remove and discard the lockwire from the bolts (3).
(5) Remove the two bolts (3) and the two washers (4).
(6) Loosen the hydraulic pressure transducer (2) and remove it together with the O-ring (5) from the manifold (6).
(7) Discard the O-ring.
(8) Install the PLUG - BLANKING in the open ports.

[Rev.10 from 2021] 2026.04.01 12:32:13 UTC